Canada balsam

n 1: yellow transparent exudate of the balsam fir; used as a

transparent cement in optical devices (especially in

microscopy) and as a mounting medium [syn: {Canada

balsam}]

2: medium-sized fir of northeastern North America; leaves smell

of balsam when crushed; much used for pulpwood and

Christmas trees [syn: {balsam fir}, {balm of Gilead}, {Canada

balsam}, {Abies balsamea}]